R Under development (unstable) (2025-02-15 r87726 ucrt) -- "Unsuffered Consequences"
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> if (requireNamespace("testthat", quietly = TRUE)) {
+   library("checkmate")
+   library("testthat")
+   library("mlr3")
+   library("mlr3cluster")
+   test_check("mlr3cluster")
+ }
Superclass MeasureClust has cloneable=FALSE, but subclass MeasureClustFPC has cloneable=TRUE. A subclass cannot be cloneable when its superclass is not cloneable, so cloning will be disabled for MeasureClustFPC.
Superclass MeasureClust has cloneable=FALSE, but subclass MeasureClustFPC has cloneable=TRUE. A subclass cannot be cloneable when its superclass is not cloneable, so cloning will be disabled for MeasureClustFPC.
Superclass MeasureClust has cloneable=FALSE, but subclass MeasureClustSil has cloneable=TRUE. A subclass cannot be cloneable when its superclass is not cloneable, so cloning will be disabled for MeasureClustSil.
Superclass MeasureClust has cloneable=FALSE, but subclass MeasureClustFPC has cloneable=TRUE. A subclass cannot be cloneable when its superclass is not cloneable, so cloning will be disabled for MeasureClustFPC.
Superclass MeasureClust has cloneable=FALSE, but subclass MeasureClustFPC has cloneable=TRUE. A subclass cannot be cloneable when its superclass is not cloneable, so cloning will be disabled for MeasureClustFPC.
Superclass MeasureClust has cloneable=FALSE, but subclass MeasureClustSil has cloneable=TRUE. A subclass cannot be cloneable when its superclass is not cloneable, so cloning will be disabled for MeasureClustSil.
Superclass MeasureClust has cloneable=FALSE, but subclass MeasureClustFPC has cloneable=TRUE. A subclass cannot be cloneable when its superclass is not cloneable, so cloning will be disabled for MeasureClustFPC.
Superclass MeasureClust has cloneable=FALSE, but subclass MeasureClustSil has cloneable=TRUE. A subclass cannot be cloneable when its superclass is not cloneable, so cloning will be disabled for MeasureClustSil.
Superclass MeasureClust has cloneable=FALSE, but subclass MeasureClustFPC has cloneable=TRUE. A subclass cannot be cloneable when its superclass is not cloneable, so cloning will be disabled for MeasureClustFPC.
Superclass MeasureClust has cloneable=FALSE, but subclass MeasureClustSil has cloneable=TRUE. A subclass cannot be cloneable when its superclass is not cloneable, so cloning will be disabled for MeasureClustSil.
Superclass MeasureClust has cloneable=FALSE, but subclass MeasureClustFPC has cloneable=TRUE. A subclass cannot be cloneable when its superclass is not cloneable, so cloning will be disabled for MeasureClustFPC.
Superclass MeasureClust has cloneable=FALSE, but subclass MeasureClustSil has cloneable=TRUE. A subclass cannot be cloneable when its superclass is not cloneable, so cloning will be disabled for MeasureClustSil.
Superclass MeasureClust has cloneable=FALSE, but subclass MeasureClustFPC has cloneable=TRUE. A subclass cannot be cloneable when its superclass is not cloneable, so cloning will be disabled for MeasureClustFPC.
Superclass MeasureClust has cloneable=FALSE, but subclass MeasureClustSil has cloneable=TRUE. A subclass cannot be cloneable when its superclass is not cloneable, so cloning will be disabled for MeasureClustSil.
Superclass MeasureClust has cloneable=FALSE, but subclass MeasureClustFPC has cloneable=TRUE. A subclass cannot be cloneable when its superclass is not cloneable, so cloning will be disabled for MeasureClustFPC.
Superclass MeasureClust has cloneable=FALSE, but subclass MeasureClustSil has cloneable=TRUE. A subclass cannot be cloneable when its superclass is not cloneable, so cloning will be disabled for MeasureClustSil.
Superclass MeasureClust has cloneable=FALSE, but subclass MeasureClustFPC has cloneable=TRUE. A subclass cannot be cloneable when its superclass is not cloneable, so cloning will be disabled for MeasureClustFPC.
Superclass MeasureClust has cloneable=FALSE, but subclass MeasureClustSil has cloneable=TRUE. A subclass cannot be cloneable when its superclass is not cloneable, so cloning will be disabled for MeasureClustSil.
Superclass MeasureClust has cloneable=FALSE, but subclass MeasureClustFPC has cloneable=TRUE. A subclass cannot be cloneable when its superclass is not cloneable, so cloning will be disabled for MeasureClustFPC.
Superclass MeasureClust has cloneable=FALSE, but subclass MeasureClustSil has cloneable=TRUE. A subclass cannot be cloneable when its superclass is not cloneable, so cloning will be disabled for MeasureClustSil.
Superclass MeasureClust has cloneable=FALSE, but subclass MeasureClustFPC has cloneable=TRUE. A subclass cannot be cloneable when its superclass is not cloneable, so cloning will be disabled for MeasureClustFPC.
Superclass MeasureClust has cloneable=FALSE, but subclass MeasureClustSil has cloneable=TRUE. A subclass cannot be cloneable when its superclass is not cloneable, so cloning will be disabled for MeasureClustSil.
Superclass MeasureClust has cloneable=FALSE, but subclass MeasureClustFPC has cloneable=TRUE. A subclass cannot be cloneable when its superclass is not cloneable, so cloning will be disabled for MeasureClustFPC.
Superclass MeasureClust has cloneable=FALSE, but subclass MeasureClustSil has cloneable=TRUE. A subclass cannot be cloneable when its superclass is not cloneable, so cloning will be disabled for MeasureClustSil.
Using automatic sigma estimation (sigest) for RBF or laplace kernel 
Superclass MeasureClust has cloneable=FALSE, but subclass MeasureClustFPC has cloneable=TRUE. A subclass cannot be cloneable when its superclass is not cloneable, so cloning will be disabled for MeasureClustFPC.
Superclass MeasureClust has cloneable=FALSE, but subclass MeasureClustSil has cloneable=TRUE. A subclass cannot be cloneable when its superclass is not cloneable, so cloning will be disabled for MeasureClustSil.
 Setting default kernel parameters  
Using automatic sigma estimation (sigest) for RBF or laplace kernel 
 Setting default kernel parameters  
Superclass MeasureClust has cloneable=FALSE, but subclass MeasureClustFPC has cloneable=TRUE. A subclass cannot be cloneable when its superclass is not cloneable, so cloning will be disabled for MeasureClustFPC.
Superclass MeasureClust has cloneable=FALSE, but subclass MeasureClustSil has cloneable=TRUE. A subclass cannot be cloneable when its superclass is not cloneable, so cloning will be disabled for MeasureClustSil.
Superclass MeasureClust has cloneable=FALSE, but subclass MeasureClustFPC has cloneable=TRUE. A subclass cannot be cloneable when its superclass is not cloneable, so cloning will be disabled for MeasureClustFPC.
Superclass MeasureClust has cloneable=FALSE, but subclass MeasureClustSil has cloneable=TRUE. A subclass cannot be cloneable when its superclass is not cloneable, so cloning will be disabled for MeasureClustSil.
Superclass MeasureClust has cloneable=FALSE, but subclass MeasureClustFPC has cloneable=TRUE. A subclass cannot be cloneable when its superclass is not cloneable, so cloning will be disabled for MeasureClustFPC.
Superclass MeasureClust has cloneable=FALSE, but subclass MeasureClustSil has cloneable=TRUE. A subclass cannot be cloneable when its superclass is not cloneable, so cloning will be disabled for MeasureClustSil.
Superclass MeasureClust has cloneable=FALSE, but subclass MeasureClustFPC has cloneable=TRUE. A subclass cannot be cloneable when its superclass is not cloneable, so cloning will be disabled for MeasureClustFPC.
Superclass MeasureClust has cloneable=FALSE, but subclass MeasureClustSil has cloneable=TRUE. A subclass cannot be cloneable when its superclass is not cloneable, so cloning will be disabled for MeasureClustSil.
Superclass MeasureClust has cloneable=FALSE, but subclass MeasureClustFPC has cloneable=TRUE. A subclass cannot be cloneable when its superclass is not cloneable, so cloning will be disabled for MeasureClustFPC.
Superclass MeasureClust has cloneable=FALSE, but subclass MeasureClustSil has cloneable=TRUE. A subclass cannot be cloneable when its superclass is not cloneable, so cloning will be disabled for MeasureClustSil.
[ FAIL 0 | WARN 0 | SKIP 5 | PASS 1858 ]

══ Skipped tests (5) ═══════════════════════════════════════════════════════════
• On CRAN (5): 'test_mlr_learners_clust_cobweb.R:2:1',
  'test_mlr_learners_clust_em.R:2:1', 'test_mlr_learners_clust_ff.R:2:1',
  'test_mlr_learners_clust_simplekmeans.R:2:1',
  'test_mlr_learners_clust_xmeans.R:1:1'

[ FAIL 0 | WARN 0 | SKIP 5 | PASS 1858 ]
> 
> proc.time()
   user  system elapsed 
  11.40    1.54   12.39